Adding an Environment Variable

Select the env variable, right-click to display its context menu, and select New Element. The newly created variable is appended to the list (you might need to expand the list to see the new variable). Set the value of the new variable by editing its value field.

Use makeroute to ensure that the paths to variables (plus actors and daemons) are correct. You can then easily add files to the system image using Ews by simply adding files in the application_files list.